No i was more thinking DVR or sling box like functionality for the one app. The problem is that from what i was looking at using it seems to be an encrypted stream from the cable box to the tv. and the only way to mitm it would be to used the reverse engineered HDCP master keys and do hardware level hacking.
The one hope I had was to look into using HD Component cables to hookup the cable box. But this will most likly not work since its not a normal cable hookup (analog to digital) but HDMI to HD component do exist.
The other thing i wonder about is the TV's embedded with Google TV. I am guessing they are just bolting in a board for google TV and not integrating it on a hardware at any high level, But it would be interesting to see if they had a better chance at getting access to the video source after it is decryption.
The problem with all of these methods is you must have root and might even need to make a custom rom. Lets hope they unlock the boot loader, and some one discovers its easy to flash new encryption keys to the Revue